Root Cause: The Requested Package Name Is Incorrect
APT reports E: Unable to locate package ros-humble-isaac-ros-image-segmentation because the requested Isaac ROS package does not use that name. The supported package name identified in the evidence is ros-humble-isaac-ros-unet. This is a package-naming error; the evidence does not establish a Docker, network, or repository failure.
Install the Correct Isaac ROS U-Net Package
Run the corrected installation command in the same Docker container where the ROS Humble environment and its APT sources are configured:
sudo apt-get install -y ros-humble-isaac-ros-unetA successful installation completes without the original “Unable to locate package” message. Keep the command inside the intended container because installing it on the Docker host does not add it to an already separate container filesystem.
Distinguish Installation from Model Conversion
The later tao-converter message, Unknown embedded device detected, and its 59660MiB allocation cap belong to a separate model-conversion failure. Correcting the ROS package name does not prove that the conversion command, model, cache, or target hardware is valid.
The supplied evidence does not identify the conversion root cause. Record the hardware configuration and compare it with the applicable system requirements before diagnosing that failure; do not treat the allocation-cap message alone as proof of insufficient memory.
Verification Decision Path
- Execute the corrected
ros-humble-isaac-ros-unetinstallation command inside the intended Docker container. - Confirm that APT no longer returns
E: Unable to locate packagefor that package name. - If APT still cannot locate the corrected package, stop treating the original nomenclature as the only fault and inspect the container’s configured package sources and ROS environment. The evidence provides no repository-specific repair values.
- Troubleshoot any subsequent
tao-converterfailure independently using the exact hardware configuration and converter output.
FAQ
What package replaces ros-humble-isaac-ros-image-segmentation?
Install ros-humble-isaac-ros-unet. The original ros-humble-isaac-ros-image-segmentation name is not the required package nomenclature.
What command installs Isaac ROS U-Net on ROS Humble?
Run sudo apt-get install -y ros-humble-isaac-ros-unet inside the Docker container that contains the configured ROS Humble environment.
Does “Unknown embedded device detected” cause the APT package error?
No connection is established by the evidence. That message and the 59660MiB allocation cap occur during tao-converter execution and require separate diagnosis using the target hardware configuration and system requirements.
